Date Posted:

2026-04-24

Country:

United States of America:

Location:

US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type:

TS/SCI without Polygraph

Security Clearance Status:

Active and existing security clearance required on day 1

At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

At Raytheon, we are seeking a Senior Principal Mechanical Engineer to serve as a Responsible Engineering Authority (REA) leading the build, integration, and execution of a critical-path opto-mechanical subassembly for a high-visibility program. This is a hands-on role for an engineer who thrives in the lab, leads from the front, and has a track record of delivering complex hardware under demanding technical, schedule, and customer-driven environments.

What You Will Do

• Lead a cross-functional team in the daily build, assembly, and integration of complex opto-mechanical hardware supporting a critical-path subassembly.

• Drive execution across engineering, planning, quality, manufacturing, and program teams to meet technical, cost, and schedule objectives.

• Coordinate and manage external suppliers and long-lead hardware, ensuring timely delivery and compliance with system requirements.

• Oversee hands-on lab integration activities, troubleshooting issues and driving resolution during hardware build and assembly.

• Lead daily execution planning (stand-ups) and communicate progress, risks, and recovery plans to program leadership.

• Chair and drive Failure Review Boards (FRBs), non-conformances, and corrective action efforts to ensure successful hardware delivery.

• Ensure hardware meets requirements through integration, test, and verification activities across the program lifecycle.

• Support domestic travel (~20%) to supplier and program locations as needed.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience.

• Experience leading cross-functional hardware build, integration, or assembly efforts for complex engineering systems.

• Experience working with opto-mechanical, electro-optical, or complex sensor hardware across the engineering lifecycle (design, procurement, build, integration, test, and delivery).

• Experience managing complex hardware deliverables with external suppliers, including long-lead procurement and requirement compliance.

Qualifications We Prefer

• Experience supporting optical or sensor-based hardware programs in aerospace and defense environments.

• Experience leading or supporting Failure Review Boards (FRBs), non-conformances, and root cause/corrective action efforts.

• Experience with system integration, verification, and validation activities.

• Experience with mechanical design tools such as Creo and product lifecycle management tools such as Windchill.

• Strong written and verbal communication skills with the ability to operate in high-visibility, customer-facing environments.

What We Offer

• A total rewards package that goes above and beyond with compensation; healthcare, wellness, and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, Innovation, and Safety.

• Relocation assistance available.

Learn More & Apply Now!

• Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

• This position requires onsite work in El Segundo, CA: Welcome to Raytheon in El Segundo, CA

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 145,600 USD - 276,800 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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